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Old 11-18-2017, 06:03 AM   #1
ExecutorElassus
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Device: kindle paperwhite
Calibre-3.8.0 sets kindle paperwhite dirty

I'm running Calibre-3.8.0 on gentoo Linux. I have a 1st-gen Kindle Paperwhite from … 2013, I think?

Calibre consistently sets the device read-only, setting the dirty bit. If I connect via regular USB and check with the OS, I see this:

Code:
[156873.009797] sd 10:0:0:0: [sdg] Synchronizing SCSI cache 
[156873.009852] sd 10:0:0:0: [sdg] Synchronize Cache(10) failed: Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK 
[156873.465571] usb 6-5: new high-speed USB device number 5 using ehci-pci 
[156874.017538] usb 6-5: device not accepting address 5, error -71 
[156887.060876] usb 6-5: new high-speed USB device number 7 using ehci-pci 
[156887.218012] usb-storage 6-5:1.0: USB Mass Storage device detected 
[156887.218201] scsi host10: usb-storage 6-5:1.0 
[156888.246073] scsi 10:0:0:0: Direct-Access     Kindle   Internal Storage 0100 PQ: 0 ANSI: 2 
[156888.246257] sd 10:0:0:0: Attached scsi generic sg6 type 0 
[156888.255063] sd 10:0:0:0: [sdg] Attached SCSI removable disk 
[156890.330907] sd 10:0:0:0: [sdg] 2797568 512-byte logical blocks: (1.43 GB/1.33 GiB) 
[156890.552748] sd 10:0:0:0: [sdg] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA 
[156890.774035]  sdg: sdg1
However, if I start Calibre, it not only fails to detect the device, it sets it read-only. I have no problem putting files on the Paperwhite directly with the file manager, but Calibre cannot.

When I run Calibre's device debug, I see the following:

Code:
Devices possibly connected: Kindle 2/3/4/Touch/PaperWhite/Voyage Device Interface, User Defined USB driver,  
Trying to open Kindle 2/3/4/Touch/PaperWhite/Voyage Device Interface ... failed 
Trying to open User Defined USB driver ... failed 
Opening of the following devices failed 
<calibre.devices.kindle.driver.KINDLE2 object at 0x7f53e222f510> 
Traceback (most recent call last): 
  File "/usr/lib64/calibre/calibre/devices/__init__.py", line 158, in debug 
    dev.open(det, None) 
  File "/usr/lib64/calibre/calibre/devices/usbms/device.py", line 825, in open 
    self.open_linux() 
  File "/usr/lib64/calibre/calibre/devices/usbms/device.py", line 599, in open_linux 
    self.filter_read_only_mount_points() 
  File "/usr/lib64/calibre/calibre/devices/usbms/device.py", line 637, in filter_read_only_mount_points 
    %self.__class__.__name__) 
DeviceError: The main memory of KINDLE2 is read only. This usually happens because of file system errors.
This happens every time. When I run 'fsck.vfat -a /dev/sdg' to repair the filesystem, it finds no errors, resets the dirty bit, and the whole process starts over.

Any ideas what's going on here, or how I can debug it?

Cheers,

EE
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Old 11-18-2017, 06:12 AM   #2
kovidgoyal
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calibre accesses USB devices using standard filesystem calls. Presumably some area of your kindle drive that calibre accesses is failing causing the OS to set it to readonly. Either replace the kindle oir reformat the drive, whioch should allow it to last a little longer.
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Old 11-18-2017, 08:45 AM   #3
ExecutorElassus
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Device: kindle paperwhite
When you say "reformat the device," do you mean a factory reset? And will I lose all the progress on all my books when I do, or does simply copying the documents folder to my computer, and then back onto the reset kindle restore them?

If it's a problem with a file itself being corrupted, how do I address that?

Cheers,

EE

Last edited by ExecutorElassus; 11-18-2017 at 08:49 AM. Reason: re-formulated the question.
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